@nebtheweb no you're an idiot, let me explain. The distance to the horizon test doesn't involve the sun.

In regards to the optical gyroscope, it's not actually a gyroscope but an acutely sensitive electromagnetic interferometer based on the Sagnac effect and it detects the electromagnetic signature from the stars rotating above. The stars are close small bits of electric plasma that are in motion.
Fuck off with your whataboutery.
...
...
1. why is there water
2. what is the camraman standing on
3. if your cameraman turned around and went in opposite direction away from the edge. then where would the cameraman go
notbatmans edge camera man
_______V V
ICE | 웃
~~~~~~~~~~~~~~~~~~~~ whats beyond this
Beyond that is death from hypothermia for your ascii camera man.
Hey, can I ask you a question? Why did you omit the answer to your question in your reply?
"...The earth is like a circular lake with islands in the middle, Antarctica is a wall of ice that forms the shore. Above the wall there's a plateau for some distance and then a ring of the highest mountains in the world, beyond that is the firmament of heaven..."
The actual camera man is on a ship looking at the ice wall shore.
...incoherent statements about oranges and gyroscopes...
bonus:
Source: Encyclopedia Americana (1958)edit:Not so bonus.

^^^ I'll admit it's possible I'm wrong about the encyclopedia entry, like you say it is a mainstream publication however, [80°22′S 77°22′E] is located 150 miles away from [80°S 90°E] so you're an idiot for claiming the entry refers to Dome Argus.
@odolvlobo, you're correct about the encyclopedia entry. The highlighted sentence is describing the features of the land. As you point out nearby mountains are referred to as "domes" due, most likely to their featureless nature.